2015 INFINITI Q40
2015 INFINITI Q40
Overview
The 2015 INFINITI Q40, a compact luxury sedan, is largely based on the previous G37 model, inheriting much of its proven engineering. This lineage generally translates to good reliability, with owners reporting fewer significant mechanical issues compared to some competitors. The Q40 was offered with a robust V6 engine and a smooth automatic transmission, both of which are known for their durability when properly maintained. While no vehicle is entirely immune to problems, the Q40’s core components have a solid track record. Common areas of concern, though infrequent, tend to be minor electrical glitches or wear on suspension components over time, typical for vehicles of this age and mileage.
Engine
3.7L V6 (VQ37VHR)
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Transmission
7-Speed Automatic
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Suspension
Standard Chassis
Worn Control Arm Bushings
- Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
- Solution: Replacement of worn control arm bushings or the entire control arm assembly.
- Cost: $400 - $800
Leaking Struts/Shocks
- Symptoms: Bouncy ride, reduced handling, visible fluid leaks on shock/strut bodies.
- Solution: Replacement of worn struts or shocks.
- Cost: $500 - $900
Electrical
Infotainment System
Bluetooth Connectivity Issues
- Symptoms: Difficulty pairing devices, dropped connections, audio stuttering.
- Solution: Software update for the infotainment system, or potential module replacement.
- Cost: $100 - $500
Power Window Motors
Slow or Inoperative Power Windows
- Symptoms: Windows move slowly or fail to operate.
- Solution: Replacement of the power window motor or regulator.
- Cost: $250 - $500
Exterior
Paint and Body Panels
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Interior
Leather Upholstery
No widespread issues reported.
- Symptoms: No widespread issues reported.
- Solution: No widespread issues reported.
- Cost: N/A
Climate Control System
Blend Door Actuator Failure
- Symptoms: Inability to control temperature (stuck on hot or cold), unusual clicking noises from the dashboard.
- Solution: Replacement of the faulty blend door actuator.
- Cost: $300 - $600
Summary Verdict
The 2015 INFINITI Q40 is generally considered a reliable vehicle, benefiting from its mature platform shared with the G37. The powertrain, consisting of the 3.7L V6 engine and 7-speed automatic transmission, is robust and has a strong reputation for longevity. While major mechanical failures are uncommon, owners may encounter typical age-related issues such as worn suspension components (bushings, struts) and occasional minor electrical glitches, particularly with the infotainment system’s Bluetooth connectivity or power window mechanisms. Interior components like upholstery are typically durable, though climate control blend door actuators can sometimes fail. Overall, the Q40 offers a dependable ownership experience with manageable repair costs for its class.